With his promoter, the former two-division champion Marcos Maidana urging him on from ringside, Argentina’s Fernando Martinez punished Jerwin Ancajas over 12 rounds to wrest away his IBF junior bantamweight title via a unanimous decision in a star-making performance in the SHOWTIME telecast opener. After exchanging hugs, handshakes and pleasantries during the final press conference on Thursday, Martinez (14-0, 8 KOs)and Ancajas (33-2-2, 22 KOs) dispensed with the niceness and engaged in an action-packed thriller. But it was Martinez, a fan of Mike Tyson growing up, who delivered the heaviest blows, squaring up to Ancajas and winging lefts and rights to win by scores of 117-11, 118-110 and 118-110. Martinez, whose father died while he was in the amateurs and helped introduce him to boxing, fought back tears as he expressed what the win meant to him. “This moment is so special to me,” said Martinez. “It hurts so much that my father’s not here for this great moment in my life, but I k